Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyanshu kumar
https://doubtnut.com/question-answer-chemistry/the-approximate-quantum-number-fo-a-circular-orbit-of-diamere-20-nm-of-the-hydrogen-atom-according-t-12002536 check this similar question video solution